79993840

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{449}}^1$

素因数の和:610

約数の個数: 80

約数和(自身を含む): 198871200

約数和(自身を除く): 118877360

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 131, 136, 170, 262, 272, 340, 449, 524, 655, 680, 898, 1048, 1310, 1360, 1796, 2096, 2227, 2245, 2620, 3592, 4454, 4490, 5240, 7184, 7633, 8908, 8980, 10480, 11135, 15266, 17816, 17960, 22270, 30532, 35632, 35920, 38165, 44540, 58819, 61064, 76330, 89080, 117638, 122128, 152660, 178160, 235276, 294095, 305320, 470552, 588190, 610640, 941104, 999923, 1176380, 1999846, 2352760, 3999692, 4705520, 4999615, 7999384, 9999230, 15998768, 19998460, 39996920, 79993840]

約数ペア:

[(1, 79993840), (2, 39996920), (4, 19998460), (5, 15998768), (8, 9999230), (10, 7999384), (16, 4999615), (17, 4705520), (20, 3999692), (34, 2352760), (40, 1999846), (68, 1176380), (80, 999923), (85, 941104), (131, 610640), (136, 588190), (170, 470552), (262, 305320), (272, 294095), (340, 235276), (449, 178160), (524, 152660), (655, 122128), (680, 117638), (898, 89080), (1048, 76330), (1310, 61064), (1360, 58819), (1796, 44540), (2096, 38165), (2227, 35920), (2245, 35632), (2620, 30532), (3592, 22270), (4454, 17960), (4490, 17816), (5240, 15266), (7184, 11135), (7633, 10480), (8908, 8980)]